a solar panel is made up of individual solar cells, when light hits these cells one layer of the silicon becom?

Green Citizen April 4, 2011
[1] comment
http://farm6.static.flickr.com/5248/5334727031_5822be8a16_m.jpg

a solar panel is made up of individual solar cells, when light hits these cells one layer of the silicon become s positive and the other becomes negative, why will this create and electrical field.

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Are these reliable plans for DIY solar panels?

Green Citizen April 1, 2011
[3] comments
http://farm4.static.flickr.com/3016/2613641157_4f87b2dfdf_m.jpg

Are the plans on this website http://www.earth4energy.com really a reliable and affordable way to make solar panels at home? I am worried it is a scam website

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Evergreen Solar Panels @ Home – At What Prices Can You Buy These Panels?

Green Citizen March 31, 2011
[2] comments
http://farm4.static.flickr.com/3101/2845238738_e58a9e2d04_m.jpg

Planning to get some clean solar energy into the house and need to know the wattage / volts output I can expect corresponding to the panel price.

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